The agency had contended that he was not cooperating with the investigation.
Calling attention to the "enormity and gravity" of the offence, the government's topmost lawyer Tushar Mehta pointed out that the Delhi High Court rejected the former minister's pre-arrest bail. Serious offence of money laundering of monumental magnitude won't be unearthed unless custodial interrogation is given, the CBI argued.
Appearing for Mr Chidambaram, senior Congress leader and veteran lawyer Kapil Sibal argued that the former minister was summoned for questioning only on one occasion and he complied. "How can he be accused of non-cooperation," Mr Sibal said. "This case is completely based on a case diary and a statement of another accused," Congress's Abhishek Manu Singhvi added.
In a special submission, Mr Chidambaram told the court that he did not leave any question unanswered when he was summoned by the agency on June 6, 2018. As evidence, he asked the judge to see the transcript of question-answer session, which is a part of the case diary.
Pointing out that no new developments that have taken place, he said he was not a flight risk, nor was he tampering with the evidence and so there was no reason for custodial interrogation.